Engine.



Patented Dec. Il, |906.

J. E. HARTwELL.

E N G N E.

(Application med my 25, 1900.)

(No Model.)

Y lll/lll.

W/TNESSES.' MW n@ A TTOHNEYS am., paens co. nuoro-umn.wmummomac.

I. 663,755. Patented nec. |900.

J. E. HARTwELL.

ENGINE.

(Application 'led Kay 25, 1900.)

jv@ W BY wrs TH: Noms Farms co, PHoroLxwa. vmsmNoToN, n -1 No. 663,755.Patented Dec. n, |900.-

J. E. HARTWELL.

ENGINE.

. (Application led May 25, 1900.) 4 (No Model.) A 4 Sheets-Sheet 3..

Ow@ By 77%s/Eysr Patented Dec. Il, |900.

.1, E. HAnTwELL.

ENGIN E.

(Application led may 25, 1900.)

4 Sheets-Shut 4.

(No Model.)

mm A A77 NEYS NrTnD STATES,

arnt NICE JACOB ERASMUS HARTWELL, OF TROY, MONTANA, ASSIGNOR OF ONE-HALFTO FRED B. OALLOW AND WILLIAM D. SAVAGE, OF SAME PLACE.

E N G l N E.

SPECIFICATION forming part of Letters Patent No. 663,755, dated December11, 1900.

Application filed May 25, 1900. Serial No. 17,969. (No model.)

To all whom t may concern.-

Be it known that I, J noon ERASMUS HART- WELL, a citizen of the UnitedStates, and a resident of Troy, in the county of Flathead and State ofMontana, have invented a new and Improved Engine, of which the followingis a full, clear, and exact description.

My invention relates to engines working by internal combustion orexplosion, and has for 1o its object to increase the power of suchengines and to provide at the same time improved means for cooling theexplosion-cham ber and adjacent parts of the engine. This result Iobtain by the injection of water,which not only has a cooling effect,but by the generation of steam increases the motive power of the engine.Y

The invention consists in the novel coustruction and arrangement ofparts employed zo for securing the above-indicated result and will bedescribed in detail hereinafter with reference to the accompanyingdrawings, while the scope of my invention will be de fined in theappended claims.

In said drawings, Figure l isa face view of a rotary engine embodying myinvention with parts in section on line l l of Fig. 2. Fig. 2 is a sideelevation of said engine with parts broken away and others in section.Fig. 3 is 3o a detail of the explosion-chamber and its connections withparts in section. Fig. e is a sectional plan on the line 4 4 of Fig. 3.Figs. 5 and 6 are sectional elevations on lines 5 5 and 6 6,respectively, of Fig. 3. Fig. 7 is a sectional elevation on line 7 7 ofFig. 2, and Fig.

8 is a plan showing the application of my invention to a reciprocatingsteam-engine.

` The rotary engine shown in Figs. l, 2, and 7 is of the type whichforms the subject-matter of the Letters Patent No. 618,347 granted to meon January 24, 1899. Brieily described, this engine comprises a shaft A,journaled in bearings B and in a casing or cylinder O, the shaftcarrying a fly-wheel or pulley D, a disk E with a camgroove E', andwithin the casing or cylinder C a disk or plate F, carrying wings orpistons F', fitting tightly into the annular working chamber C of thecylinder C. At the top of said chamber is the sliding 5o abutment G,which is worked by means of a rod I-I, having a projection H, whichenters the cam-groove E'. The abutment is thus alternately moved intoand out of the Working chamber C', according to the well-knownoperationofrotaryengines of this class. C203 are the ports for theadmission and exhaust of the driving agent, and as the engine isreversible their functions are interchangeable.

I and I are the corresponding inlet and outlet pipes. So far theconstruction is substan- 6o tially the same as in my above-mentionedpatent. 1

The parts constituting my present invenA tion are as follows: J is anigniter or torch, consisting of a tube open at its top and closed at itsbottom and connected by a pipe K with a tank K containing gasolene orother fuel, the connection being controlled by a valve K2.

J is a guide-channelf for the insertion of a match to light thegasolene, and J2 is a vent. 7o Upon igniting the fuel the upper end ofthe torch becomes hot enough to vaporize the oil or other explosive fueland to explode it, as more fully described hereinafter. The upper partof the torch J issurrounded by a casing L, forming an annular chamberL', provided with a water-jacket L2 to prevent it from getting too hot.Water is supplied to the said jacket through a branch pipe M from a mainpipe M, While the water leaves the jacket 8o through the pipe M2. Thewater is fed by a single-acting pump, the piston N of which works in acylinder N to first draw in the water through the suction-valve l 3 fromthe suction-pipe M4L and then force it through the 85 delivery valve M5into the main pipe M. Water is thus injected periodically. If desired,the pipe M may receive its Water continuously from the mains, and thusbe independent of the pump. The water injected 9o by the piston N intothe pipe M s deflected downward in greater or smaller quantity by athrottle-valve O, capable of adjustment by means of a handle O. rlheWater thus deflected reaches a pipe P, leading downward to the pipe Tand containing a check-valve P. Any Water not deflected by the valve Opasses through the extension M6 of the pipe M3 to waste or back to theWater-supply.

The piston N is operated by means of a Ioo swinging lever Q, pivoted atQ' and moved by a slide-bar R, having a lug R', projecting that theexpansive power of the motive agent l rod X, connected with the crank Uof the relwhich-.has been exploded by the heat of the vS4 prevent the'explosion from spreading to into the cam-groove E'. The slide-bar R hasl a slot Where it receives the lever, so that in 1 starting the enginethe lever can be operated manually independently of the slide-bar. Thislever Q also works in a manner similar to the piston N and the piston N2of the fuelpump, the cylinder of which, N3, communicates with thefuel-supply pipe S, having a suction-valve S, and with the fuel-deliverypipe S2, havingathrottle-valve S3and a checkvalve S4, said pipe beingarranged to discharge the fuel into the explosion-chamber L. Any fuelwhich is not forced past the Valve S3 will open a valve S5 and return tothe fuel-supply through 'the return-pipe S6. It will thus be understoodthat fuel (gasolene or the like) will be injected periodically into theexplosion-chamber L in quantities which may be varied by a properadjustment of the throttle-valve S3. At the same time water is injectedinto the pipe T in quantities varying according to the position of thethrottle-valve O, and this water mixes with the vaporizc'd fuel torch J.The explosion heat first vaporizes the water and then superheats thesteam, so

is greatly increased. The check-valves P' and and injuring thewater-supply pipe and the fuel-supply pipe. The driving agent linds itsonly escape through the pipe T, which comin'unic'ates with one or theother lmeniber of a cross-pipe T, according tothe position of thereversing-valve U. ln Fig. 6 the pipe T communicates with the left-handmember of the y,cross-pipe T and the driving medium is accordinglydeflected into said member. The i two sections or members ofthecross-pipe T communicate permanently with the vcorresponding inlet andoutlet pipes I and I. With the valve U in the,position shown in Fig. 6the pipe l is the inlet-pipe. The driving medium therefore passesthrough 'said pipe into lthe Working chamber C', operating the pistonsF/ in the well-known manner. The number of explosions corresponds to thenumber of times a piston passes the inletport-that is, with two pistonsthere will be two explosions per revolution. The exhaust takes placethrough one of the apertures G2 or C3, as the case may be, thecorresponding pipe I or I' and a valve V, which controls the connectionof the said pipe I or I' with each of the exhaust-pipes W. Said valves VWork in chambers V and are operated bya sliding versing-valve U and witha reversing-lever Y, pi'voted to a support Z, and having the customaryarrangement for locking it in position-viz., a Acatch-rod Y', pressed bya spring Yfa into notches Z in the support.

tBy reference to Figs. 5 and 6 it Will be understood that the valves U Vare so connected that the exhaustpipe W is closed on that side of thepipe T/ which at the time communi- -ner of reversingit will now bereadily understood without further explanation.

In Fig. 2 I have shown the explosion mechanism at a relativelyconsiderable distance from the working chamber, so as to betterillustrate the several parts. In practice, however, the pipes I Il willbe made as short as possible-that is, the explosion-chamber will belocated in the proximity of the working chamber, so as to avoid loss ofheat by radiation and to reduce the waste space.

To 'adapt the invention to an engine of the reciprocating type, all thatis necessary is to operate the reversing-valve U and the eX-haust-valves V automatically, and this may be readily 'done bysubstituting for the lever Y a rod y, driven by the engine, forinstance, by means of an eccentric y'. q is the crosshead, connectedwith the pistons of the fuelpump'nand of the water-pump n' and driven bya rod n2 from the eccentric n3'. m4 is the suction-pipe for water, andAs the fuel-supply v pipe. j The other parts are the same ashereinbefore described, and may be readily identified, as they bcarthesame reference-letters, only small letters are used instead ofcapital's.

Having thus described my invention, I 'claim as new and desire to secureby Letters Patent- 1. The combination of the tubular torch open at thetop and having an interior burner, a casing surrounding the upper endvof the torch and forming an explosion chamber therewith, said casingbeing provided with a fuel-inlet leading to the explosion-chamber, acylinder containing aworkingchamber connected with saidexplosion-chamber, a waterinlet located in the connection 0f said twochambers, and means for injecting water and fuel respectively throughsaid inlets.

2. In an engine, a casing or cylinder -containing a working chamber, anigniting tube or torch closed at the bottom and open at the top 'andhaving an igniting-opening at its lower end, an explosion-chambersurrounding the upper end of the tube or torch, and havingaWater-jacket, a connection between the explosion-chamber and the'workingv chamber of the cylinder, and means for admitting water intothe said connection, substantially as described.

3. In an engine, a casing or cylinder containing a working chamber, anigniting tube or torch open at the top and closed at the bottom andhaving igniting 'and vent openings 'at its lower eud-7 an`explosion-'cha'mber surrounding the upper end of the tube or torch, andhaving a water-jacket, a 'connection between the explosion-chamber andthe working chamber of the cylinder, a pump, 'and a connection betweenthe pump and the connection connecting the explosion and IIO workingchambers and the water-jacket, substantially as described.

4f. The combination of the tubular torch having its upper end open andits lower end closed and provided with an interior burner, the casingsurrounding the torch and forming an explosion-chamber therewith, acylinder containing a working chamber connected tively into saidchannels, and additional pipes or channels for receiving that portion ofthe water and fuel which does not pass through the throttle-valves.

In an engine, a cylinder having ports adapted to serve interchangeablyas inlet and outlet for the motive agent, an explosionchamber, pipesleading from the ports of the cylinder, a valved pipe connecting thesaid pipes, a connection between the valved pipe and theexplosion-chamber, a Valve-chamber connected with each pipe, a valve ineach chamber, and means for simultaneously operating all the valves,substantially as described.

7. In an engine, a cylinder having ports adapted to serveinterchangeably as inlet and outlet for the motive agent, anexplosionchamber, pipes leading from the ports of the cylinder, a pipeconnecting the said pipes, a valve in said pipe, a connection betweenthe explosion-chamber and the said pipe, a valvechalnher connected witheach pipe, a Valve in each chamber and connected together, and aconnection between the said valves and the first-named valve,substantially as described.

8. In an engine, the combination with a cylinder ha\\'ingl a workingchamber, of a torch constituting an igniting-tube, an annular eX-plosion-chainber around the upper end of the ignitingtube, and having awater-jacket, a fuel-supply for the explosion-chamber, a connectionbetween the explosion-chamber and. the working chamber of the cylinder,a water-supply connected with the water-jacket of the explosion-chamber,,and with the connection between the explosionvand working chambers, anda valve for controlling the amount of water passing to said connection,substantially as described.

9. In an engine, the combination with a cylinder having a workingchamber, an explosion-chamber, a fuel-supply for the explosionchamber,and an igniting-tube for the eXplosion-chamber, of a connection betweenthe explosion-chamber and the working chamber, a water-supply pipe, aconnection between the water-supply pipe and the connection connectingthe explosion and working chambers,

a check-valve in the last-named connection,

and a deflecting-valve alsoin said connection, substantially` asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JACOB ERASMUS HARTWELL.

Witnesses:

KATE REYNOLDS,

RoBT. GREGG.

